Life-Cycle Assessment of Recycling Postconsumer High-Density Polyethylene and Polyethylene Terephthalate

Table 7

Data for the processing of 1 ton of the postconsumer recycled HDPE pellet.

Raw materials
Sorted postconsumer HDPE	1098 kg
100% sodium hydroxide	0.32 kg
Defoamer	1.57 kg
Wetting agent	0.59 kg
Surfactant	0.81 kg
Alkaline cleaner	0.058 kg
Energy usage
Process energy		Total energy (Btu)
Electricity	450 kWh	1,535,000
Diesel	0.176 liters	7634
Propane	0.304 liters	8470
Total process		1,551,104
Incoming transportation energy
Water consumption	240 liters	331,000
Environmental emissions
Atmospheric emissions
Particulates (PM10)	0.05 kg
Particulates (PM2.5)	0.032 kg
Solid wastes to landfill	140 kg
Waterborne emissions	0.6 kg
Water emission
BOD	0.62 kg
COD	0.0031 kg
Suspended solids	0.6 kg
Dissolved solids	0.02 kg